Combination coal and gas heater



July 22 1924. 1,502,575

H. LANGE FOMBINATIN GOAL AND GAS HEATER Filed Julyl 13, 1923 3 Sheets-Sheet 1 F'IGQI. l

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HUMAN H. LANGE COMBINATION COAL AND GAS HEATER Filed July 13. 1923 3 Sheet$--$het l l/I,,l-u-"fl--r'f-fa'-1-- July 22, 1924.

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July 22 1924. 1,502,575

H. LANGE COM'BINATION COAL AND GAS HEATER Filed July l5, 1923 3 Sheets-SheeiLs ES HENRY LANG EL,

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Patented July 2,2, 1924.

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HENRY LANGE, or QUINcY, ILLINOIS;

COMBINATION `COAL .AND GAS HEATER.

Application filed July 13, 1923.

To all whom t may concern:

Be it known that I, HENRY LANGE, a citizen of the United States, residing at Quincy, in the county of Adams and State of Illinois, have invented certain new and useful improvements in Combination Coal and Gras Heaters; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates toy air heating stoves and furnaces, and more especially 'to combination coal and gas heaters, such ,as are capable of burning soft or hard coal, Iwood or other solid fuel as well as gas or other hydrocarbon fluid fuel, it being the primary object of the invention to incorporate in a solid fuel heater or stove, novel and improved means for heating by gaseous or fluid fuel.

Another object of the invention is the provision of such a combination heater which willradiate more heat'than the usual combination heater, and which will not burden the heater with extra combustion chambers on ,the exterior of the heater, and a further ob- :ject in this connection is to arrange the gas 'burner in the base portion of the heater or 30 :stove for obtaining several decided advantages, as hereinafter more fully pointed out.

A still further object is to construct the base and ashpit portion of the heater in a novel manner to accommodate the gas or fluid burner and to obtain beneficial results.

The invention has for another object the provision of a novel lining within the drum or shell of the combustion chamber for the flow of the products of combustion there- Lthrough from the ygas chamber, so that the ieat is radiated through the drum or shell, and a further object in this connection is to provide novel means forv conducting the products of combustion from the gas chamber into the'space or flues formed bythe lining.

Other objects of the invention include the radiation of heat through the shell of the base from the gas burner located in the base ;1 the elimination of a combustion chamber or other obstruction surrounding the firepot so that the heat can be radiated from the firepot without interference when solid fuel is burned; the protection of the drum or shell of `thc combustion chamber by fthe lining when solid fuel is burned, as well asprovid- Serial N0. 651,321.

ing aspace or lflues for the flow of the productsoof combustion from the gas chamber; and the improvement of the heater in other respects to enhance the utility'and efficiency of the heater.

llVith'y the foregoing and other objects in view, which will be apparent as the description proceeds, the invention resides in the .construction and arrangement of parts as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in theaccompanying drawings, wherein- Figure 1 is a front view of the improved combination heater, portions being broken away and shown in section.

Fig. 2 is a vertical section on the line 2-2 of Fig. 1.v

Fig. 3 isafhorizontal section on the 'line 3MB of Fig. l.

Fig. eis a bottom View showing the base shell, ashpit and gasburner.

Fig.-5 is a cross 'section on the line 5 5 of Fig. 1 of one of the exterior flues.

As shown, the heater is of the type generally known as an Oak heater, but the improvements may be embodied in other kinds of stoves and heaters.

In' carrying out the invention, instead of the base having a closed bottom to form the ashpit chamber therein, it comprises, in the present construction, a base shell 10 open at 9o the bottom and having its lower edges fitted onr and supported by the skirting 11 and legs 12, whereby air can 'pass upwardly from the floor into the shell 10. The4 topof the shell 10 has an annular seat 13 receiving 95 the lower edge of the lirepot 14, and the top of the shell also has supports or seats 15 for the bottom grate 16' of the repot. The sheet metal drum or shell 17 surrounding the combustion chamber' above the fire- 100 pot has its lower edge secured to the upper edge portion of the firepot, and the top 18 of the heater is mounted on the upper edge of the drum l'and has the smoke collar or outlet 19 for the products of combustion. 105 The drum 17 has the rdoor 2O at the front thereof for receiving coal, wood or other solid fuel. f f

As thus far described, the `heater isl of a construction much the same as an or- 110 dinary coal or solid fuel heater,ywith the'exception that the base is open at the bottom,

and another distinction is the provision of an ashpit y21 separate and distinct from the base shell v10. The ashpit 21 comprises a bottom, sides, and back, and the forward ends of the bottom and sides fit or abut-the front wall of the shell 10 below and at .the opposite sides of the ash Vand draft opening 22 in the front wall of said shell, a suitable ash and draft door being provided for said opening, according to well `known practice. The side and back walls of the ashpit eX- tend up to the top of the shell 10 and are spaced from the side and back walls of the shell 10, thus providing a U-shaped gas chamber 24 in the basebetween the shell 10 and ashpit. The ashpit 21 is bolted or otherwise secured to the shell 10, as at 23. The gas chamber 24 `is open at the bottom so as to receive the air from the floor.

Located withinv the gas chamber 24 isa as or fluid hydrocarbon burner 25, said urner being tubular and of U-shape so as to extend between the side and back walls of the shell 10 and ashpit, and such burner is located within the base of the stove out ofthe way without encumbering the exterior ofthe heater. The burner has an linlet portion or nipple 26 yat one angle extending through the corresponding side wall of the shelll 10 near thecorresponding rear corner of said shell, and the opposite arm' of the burner 25 has an ear `2.7 fastened by a bolt or other securing element. to a supporty ing-29 for the insertion of a match or lighted member to light the gas discharging upwardly through the apertures in the top of the burner, and said opening 29 is normally closed by a metal iap or shutter 30 pivoted to the shell 10, as at 3l, above said opening so as tov swing closed by gravity.

As shown, the burner 25 is split, being composed of upper and lower halves or sections which are secured together by the screws 30, but the burner can be of a solid casting, if desired.

The topof the shell 10 is provided with outlet openings 32 near the front corners of the shell, for the discharge of the products ofcombustionfrom the ends of the U- openings. The portions 33 are spaced inwardly from the openings 32, as seen in Fig. 1.

The products of combustion pass upwardly from the gas chamber through a pair of flues `v3.4on'the exterior of the heater, and

located at the opposite sides of the firepot 14. Said flues are constructed of cast metal, and each of them comprises a channelshaped section 35 and an inner plate or section 36 secured against the edges or flanges 0f the channel 35 by means of a screw 3'? extending through the web of the channel 35y and threaded into the plate 36. The lower ends of the flues 34 are fitted in the openings 32 so as to communicate with the ends of the chamber 24, and the-fines 34 have outstanding flanges 38 to seat on the top of the shell 10. The upper ends of the plates 36 terminate short of the upper ends of the channels 35 and have inturned flanges 39 to extend under and overlap an outstanding annular flange or rib 40 with which the irepot 14 is provided near its upper edge. rl'ihe flues 34 are spaced from the wall of the firepot 14, and the upper. ends of the channels 35 are extended upwardly above the upper ends of the plates 36 and are curved inwardly to abut against or fit ,the drum or shell 17 above the flange or rib 40. rIhe upper ends of the channels 35 are secured to the shell or drum 17, by 'bolts 41 or other ,securing elements, around openings 42 provided in the drum immediately above the iirepot and at the opposite sidesof the door 20. The flues 34 have slots between the upper ends of the channels 35 and the flanges 39 and upper end portions of the plates 36 to engage the flange or rib 40of the iirepot, whereby the upper ends of theA i lues tit around the openings 42 to conduct the products of combustion from the chamber 24 through the openings 42 into the drum 17.

The flues 34,`although located on the eX- terior of the heater, do not appreciably encui'nber the heater on the exterior, and do not interfere with the radiation of heat from the firepot. Such fines are the only portions of thc gas heating means which are on the exterior of the solid fuel stove,

A lining is provided within the lower portion of the drum 17 Aimmediately above the irepot, and is composed of the side and back sections or plates 43 and 44, respectively,

which are preferably cast from suitable l l' metal Vcapable of withstanding the heat. The lining sections or plates 43 and 44 are of arcuate form so as to be concentric with andspaced inwardly from the drum lyand the upper and lower edges of said sections are extended outwardly so as to fit or abut the drum. The forward ends of the sections 43 are also curved outwardly to abut the drum at the opposite sides of the door 20. The forward ends of the sections 43 are fastened by bolts 45 tothe drum 17 and frame of the door 20 at the opposite sides of the door opening, and the section or plate 44 issecured by the bolt 46 to the rear wall of the drum 17, the sections 43 and 44 havlltl ing the depressions 47 in which the bolts are seated. The ends of the back or intermediate section 44 overlap the rear ends of the sections 43, whereby the sections are fas tened in place by the three bolts 45 and 46, as well as bringing the adjacent ends of the sections into communication. The lining provides an arcuate space between the lining and drum 17, and the openings 42 in the drum are located at the ends of said space, whereby the flues 34 discharge into the end portions of said space, the upper ends of said flues and ends of said arcuate space being in communication through the openings 42. a

The upper edge portions or flanges 48 of the sections 43 and 44 of the lining are inclined, so as to slope away from the drum 17 thereby shedding coal, soot and other solid matter inwardly from overrthe lining, so as not to pass behind the lining. Said lining sections have the inwardly bulge-d portions 49 immediately below the flanges or edge portions 48, and said bulged portions 49 of the sections 43 have lower openings 50 therein near the forward ends of the lining sections 43, for the discharge of the products of combustion from within the space 53 between the lining and drum into the combustion chamber'surrounded by the drum. The openings 50 are directed downn wardly so that coal, ashes, and soot will not fall down through said openings.

The lining sections or plates 43 have hori-k zontal flanges 51 between their upper and lowerredges and extending from their forward to their rear ends. Said flanges extend outwardly and have their outer edges abutting the drum 17, thereby providing for the back and forth flow of the products of combustion in the space 53 in passing from the openings 42 to the openings 50. The products of combustion entering thespace 53 through the openings 42 must flow rearwardly under the flanges or baffles 51, thence upwardly in the rear portion of lthe space 53 between the lining section 44 and drum 17, and thence forwardly above theflanges orbaiiies 51 to escape throughthe openings 50 into the combustion chamber of` the heater. This provides for the zig-.Zag or back and forth flow of the products of combustion -along the drum 17 before entering the combustion chamber, in order that the heat from the products of combustion will be radiatedy through the drum. The lining` 43-44 will also prevent the drum `from being burnt through immediately above the iirepot. v

The shell 10 is preferably rprovided withy isinglass :or similar windows 52 at the upper side corners thereof, whereby the flame of the gas burner can be observed. v

Coal, wood or other solid fuel can be burned in the stove in the usual manner, the

ashes falling down through they grate 16 into the ashpit 21 from which the ashes can be removed through the opening 22. The lining 43-44 protects the lower portion of the drum 17 from the intense heat of the flames, and the heat can be radiated without interference through the wall of the lirepot 14 and upper portion of the drum 17. The firepot being unobstructed on the exterior will enable the heat to be radiated from the repot without interference, thereby also enabling the`heat to pass from the wall of the firepot so as to avoid excessive heating ofthe irepot. Consequently, the iirepot will have a longer life than when surrounded or encased. rlhe flues provided for the iiow of the products of combustion from the gas burner will in no way conflictV with the use of the heater in burning solid fue When burning vgas or other hydrocarbon fuel, the air passes upwardly into the chamber 24 from immediately above the licor, and the fiames rise within the chamber 24, thereby heating the shell 10 and ashpit 21. The base being heated will radiate heat close to the floor, with telling effect, and the heat which is radiated through the walls of the ashpit will pass upwardly into the firepot to be radiated through the firepot wall and drum 17. The products of combustion pass from the chamber 24 up through the flues 34, from which some of the heat is radiated, and such products of combustion pass through the openings 42 ,into the space 53. The prod ucts of combustion flow rearwardly underv theflanges or baffles 51 behind the lining sect-ion44 and then upwardly and forwardly through the space 53 above the flanges 51. The products of combustion then discharge through `the openings 50 into the combustion chamber and pass out through the usual outlet 19. The heat derived from the gas burner is thus radiated through the base shell 10, from the flues 34, through the wall of the drum k17, and from other portions of the heater, thereby obtaining extensive radiating surfaces and efficient heating of the air surrounding the heater,

ylt will also be noted that the gas burner is located within the base out of the way, and that the stove` or heater is not objec tionably encumbered or obstructedon the exterior.

1t is also possible to burn solid fuel and Huid fuel at the same time without conflicting with one another, and no changes are `necessary in burning either solid or vfluid fuel, the heater being constantly ready for burning either kind of fuel.

Having thus ydescribed the invention, what is claimed asy new is 1. A combination heater comprising a base shell having a top, a side wall and a` chamber therein acent to said wall under said top, la firepot on the top of the shell, and a iuid fuel burner within said chamber under the top and behind the wall yof the shell. Y

2. A combination heater comprising a base shell having a top, a side wall and a chamber adjacent to said wall under said top, said chamber being open at the bot-tom, a lirepot on the top of the shell, land a fluid fuel burner in said chamber under the top and behind the wall of the shell.

25. A combination heater comprising a base shell having a top and a side wall, an ashpit within said shell, a firepot mounted on thetop of the shell above said ashpit, and a fluid fuel burner between said shell wall and ashpit under the top olf the shell.

fl. A combination heater comprising a base shell having a top and a side wall, said shell 'being open at the bottom, an ashpit within the shell, a iirepotl mounted on the top of the shell over the ashpit, there being a chamber between the vashpit and said wall of the shell, and a fluid fuel burner in' said chamber under the top of the shell.

5. A combination heater comprising a base shell, a top and side walls, one side wall having an opening, an ashpit within the shell extending to said wall in communication with said opening, a firepo-t mounted Aon the top of the shell over the ashpit, there being a U-shaped chamber between the other walls of the shell and the ashpit open at the bottom, and a U-shaped fluid fuel burner in said chamber lunder the top lof the shell.

.6. A combination heater comprising a base having a chamber under the top thereof, a irepot mounted on the top of said base, a .drum mounted on the firepot, a fluid fuel burner in said chamber, a lining within the drum providing a space between the lining and drum for the liow of products of combustion therein, and means for conducting the products of combustion from said chamber past the lirepot into said Y space.

7. A combination heater comprising a base. having a chamber under the top thereof, a iirepot mounted on the top of said base, a drum mounted on the iirepot, a fluid fuel burner in said chamber, a lining within the drum providing a space between the lining and drum for the flow of products of combustion therein, and a flue on the `exterior of the firepot communicatingat its lower end with said chamber and at'its upper end with said space.

8. A combination heater comprising a base having a chamber under the top thereof, .a firepot mounted on the top of said base, a drum mounted on the lirepot, arfiuid fuel burner in said chamber, a lining within .the drum providing a space between the lining and drum for the flow of products of combustion therein, said base having an opening providing an outlet for saidchamber, the drum having'an opening providing an inlet for said space, and a flue on the exterior of the firepot having its ends communicating with said openings =9. A combination Ilheater comprising a base having a Vchamber' under the top thereof, aprepot mounted on the topof the base, a drum mounted on the firepOt, a lining within the drum providing a space between the lining and drum for the fiow of products of combustion, the firepot having an outstanding flange near its upper edge, the drum having an opening above said flange providing an inlet for said space, and a flue communicating at its lower end with said chamber, said flue being located at the exterior of the firepot and the upper end portion of the flue fitting and extending in-A wardly over said flange in communication with said opening.

Vl0.V A combination heater comprising a base shell, -a topy and sidewalls, Ione side wall havinlr'an opening, an ashpit in .said shell exten ing to saidopening, there being a U- shaped chamber between said ashpit and the other sidewalls of the shell, a fluid fuel burner in said chamber under the top of theV shell, aj firepot mounted on theshell overthe ash-pit, a drum mounted on the lirepot, an arcuate lining within Vthe drumV forming an arcuate space between the lining and drum for the flow of-'products of combustion, and opposite Lflues establishing communication between the end portions of said chamber v and space.

11. Av combination heater comprising a base shell, a top 'and side walls, one side wall having an opening, an ashpit in said shell extending to said opening, ythere being a U-sha-ped chamber Y'between the other side walls Vof said 'shell and the ash it, av iiuidffuel burner in said chamber, a iirepot mounted on the top of the shell over the ashpit, a idrum mounted on the firepot, anarcuate lining within the drum forming 'an arcuate space between the lining and drum for the flow Vof products 'of combustion, the

shell lia-ving openings near the ends of saidV chamber, the drum having openings near the ends of said space, and opposite flues at the exterior of the iirepot having their `ends in communication with said openings for the flow of the products of combustion fromy the chamber into said space.

12. YA combination 'heater comprising a drum, an arcuate lining within the drum providing a Vspace between the lining ,and drum for the circulation of products vof combustion, the lining having outlet openings near the upper portionl and ends thereof, battles extending from the ends of, said lining-'between the upperV and lower portions thereof to the intermediate portion of the lining, a fluid fuel burner, and means for conducting the products of combustion from said burner into said space at the ends thereof below said baffles.

13. A combination heater comprising a base having a chamber, a lirepot mounted on the base, a drum mounted on the firepot, a fluid fuel burner in said chamber, an arcuate lining within the drum providing an arcuate space between the lining and drum for the flow of products of combustion, baffles in said space extending from the ends of the lining to the intermediate portion thereof between the upper and lower edges of the lining, the lining having downwardly directed outlet openings near its ends above said baflies, the drum having openings near the ends of the lining below said baffles, and flues communicating at their lower ends with said chamber and communicating at their upper ends with the lastnamed openings.

14, A combination heater comprising a base shell having a top and side walls, a 25 firepot mounted on the shell, and a fluid fuel burner within said shell below said to and adjacent to the walls thereof for heat# ing said walls.

15. A combination heater comprising a base shell, an ashpit within said shell, a firepot mounted on the shell above the ashpit, a drum mounted on the firepot, the drum and firepot enclosing a combustion chamber7 a Huid fuel burner between said shell and ashpit under the top of the shell, and means for conducting the products of combustion from between the shell and ashpit along the wall of the drum and into said combustion chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY LANGE.

Witnesses:

A. H. STORE, G. H. WILBE. 

